Add postprocess argument to DeepVariant task

deepvariant.wdl

@@ -28,6 +28,7 @@ task RunDeepVariant {
         File inputBamIndex
         String modelType
         String outputVcf
+        String? postprocessVariantsExtraArgs
         File? customizedModel
         Int? numShards
         String? outputGVcf
@@ -51,8 +52,9 @@ task RunDeepVariant {
         ~{"--output_gvcf " + outputGVcf} \
         ~{"--customized_model " + customizedModel} \
         ~{"--num_shards " + numShards} \
-        ~{"--regions} " + regions} \
+        ~{"--regions "  + regions} \
         ~{"--sample_name " + sampleName} \
+        ~{"--postprocess_variants_extra_args " + postprocessVariantsExtraArgs} \
         ~{true="--vcf_stats_report" false="--novcf_stats_report" VCFStatsReport}
     }